Counter slashing machine



Dec. 27, 1938.

COUNTER SLASHING MACHINE' C. W. BAILEY Filed Aug. 3l, 1937 AAA A J: I

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I l I@ Invewow Patented Dec. 27, 1938 UNITED STATES PATENT OFFICE COUNTER SLASHING MACHINE A. Stewart Application August 31,

7 Claims.

The present invention relates to the manufacture of counters and in one aspect consists in a novel machine for skiving and slashing counter blanks preparatory to molding them. In another aspect it consists in an automatically operating slashing mechanism Which may be employed as an independent unit or as an attachment or auxiliary mechanism for a skiving machine.

In making certain types of shoes, of which stitch-downs are one example, the shoe manufacturers require counters having outwardly directed flanges as distinguished from the inturned anges which are found in counters intended for shoes of other types. In preparing a counter blank for molding an outturned flange therein it has been the practice to slash a portion of the lower margin since otherwise this must be elongated in the molding operation. The slashes permit sections of the margin to fan out and lie flat without distortion of the upstanding walls of the counter thus facilitating the molding operation and improving the molded counter.

Prior to my invention counters have been by the aid of a slashing machine to which the counter blanks have been presented successively 'by an operator. An object of the present invention is to provide an automatically acting slashing machine to which counter blanks may be fed mechanically from a magazine or other source of supply and by which the slashing operation is effected automatically, accurately and at high speed, without making any considerable demands upon the skill and judgment of an operator.

In slashing a counter blank it is undesirable to carry the slashing into the straight forward portions of the counter flange since the slashes have no useful function in those portions of the ange which are not to be given an arcuate shape and, if present, would tend objectionably to weaken the flange. Accordingly, an important feature of the present invention consists in a machine constructed and arranged to confine the slashing operation to a zone of predetermined length and location. The slashing operation is effected upon the counter blank as the latter is passed in a flat condition through the machine, and, as herein shown, the desired results are achieved by providing mechanism for rendering the slashing knives inoperative during a predetermined portion of the feeding movement of the blank.

These and other features of the invention will be best understood and appreciated from the folslashed as a distinct operation either by hand or 1937, Serial N0. 161,828

lowing description of a preferred embodiment thereof selected for purposes of illustration. and

shown in the accompanying drawings in which,

Fig. l is a cross-sectional View on the plane I--l of Fig. 2 showing the operative instrumentalities I of the machine, the frame being omitted for the sake of clearness,

Fig. 2 is a View of the machine in elevation as seen from the right-hand end in Fig. 1,

Fig. 3 is a plan view partially in section, of the mechanism shown in Fig. l,

Fig. 4 is a view in perspective of the slashing rolls, and

Fig. 5 is a view in perspective of a slashed counter blank.

As herein shown the slashing mechanism is incorporated in a counter skiving machine of commercial construction, and only so much of that machine is shown as is necessary for an understanding of the present invention.

Journaled in the main frame of the machine is a pair of transverse Shaftsl and l2 arranged one above the other and carrying respectively a matrix cavity roll ll and a toothed feed roll I3.

A work table I4 is located in position to direct successive counter blanks into the bite of the rolls and a skiving knife l5 is adjustably mounted on a carriage I6 directly behind the rolls. The carriage i6 is in turn mounted upon an adjustable support Il. As the flat counter blanks are fed between the rolls, the feed roll I3 forces the center port-ion of the counter into the cavity of the matrix roll I I with the result that the skiving knife l5 bevels the entire margin of the counter blank as the latter is advanced by the action of the rolls.

Referring to Fig. 5, the counter blank there illustrated has a thick, unskived center portion defined by a bevelled marginal portion 9i, as a result of its passage through the matrix roll l mechanism just described. As the skived counter blank leaves the knife l5, it is advanced across a guide plate I8 until it is engaged by feed rollers which carry it to the slashing mechanism.

An upright portion 2Q of the machine frame is shown in Figs. 2 and 3 as providing bearings for a transverse shaft 2l carrying at one end a sprocket Wheel 22 which is driven by a sprocket chain 23 through a sprocket wheel i9 on the end of the feed roll shaft i2. The shaft 2| carries a pinion 2li meshing with an idle pinion 25 mounted on a stub shaft directly above it, and in turn driving a pinion 26 which is fast on a sleeve 2T mounted upon a transverse shaft 28 which is journaled in the frame 2U. Fast upon the sleeve K 21.1's an anvil roll 29 which cooperates with the slashing roll 30 in feeding and slashing the counter blank.

The slashing roll 30 is equipped with a series of spaced axially arranged blades 35 which extend as a series completely about its circumference. The slashing blades are aligned circumferentially; that is to say, they are of equal length and their ends lie in the same transverse planes. The slashing roll is secured to a sleeve 3l which is journaled upon a transverse shaft 32 and provided with a pinion 33 meshing with the pinion 26 of the anvil roll sleeve already mentioned.

The slashing roll shaft 32 is mounted for bodily vertical movement in vertical ways formed in the upper part of the frame 20. It is connected at each end to a tension spring 34, which normally tends to lift the shaft 32 and the slashing roll into inoperative relation with the anvil roll 29. The shaft 32 is forced positively downwardly into operative position by cam-actuated mechanism which will now be described. In addition to the pinion 24, the shaft 2| carries a small pinion 48 and this is arranged to mesh with an idle pinion 4| journaled upon a stub shaft projecting outwardly from the frame 20. The pinion 4| in turn meshes with a pinion 42 to which is adjustably secured a cam 43. The pinion 42 and its cam are journaled upon the outer end of the shaft 28 which also carries the anvil roll 29. The cam 43 has a bolt and slot connection with the pinion 42 permitting adjustment of the cam to regulate its timing. 'I'he clamping bolt 44 of this connection is shown in Figs. 2 and 3.

The cam 43 is effective to oscillate a cam lever 45 having a cam roll 46 and extending downwardly from a transverseY shaft 41 journaled in bearings secured to the upper ends of the forked frame 28. The shaft 41 is provided with a pair of Vrearwardly extending arms 48 each of which engages a shouldered plunger 49 mounted for vertical movement in the frame 20 and shaped at its lower end partially to encircle the shaft 32. In Figs. 1 and 2, the cam roller 46 is shown as being thrown outwardly by the high portion of the cam 43, swinging the cam lever 45, depressing the plungers 49 and consequently holding the shaft 32 and the slashing roll 3|) in their lowered or operative position in which the knives 35 of the roll 30 are effective to slash and feed the counter blank which is passing between it and the anvil roll 29. When the cam roller 46 passes off from the high part of the cam 43 the springs 34 are free to release the shaft 32 so that the slashing blades 35 no longer slash the counter blank but merely engage it as feeding spurs.

A pair of feed rolls 5| and 52 are provided at the rear end cf the guide plate |8 as already intimated. The lower of these feed rolls is mounted upon a shaft which is freely rotatable and is preferably a rubber roll. The upper feed roll 5| is mounted upon a shaft 53 having a pinion 54 at its outer end which meshes with an intermediate idle pinion 55 and that in turn meshes with the pinion 33 which is carried by the sleeve 3| of the slashing roll. In passing through the feed rolls 5| and 52 to the slashing roll 30 the counter blank is conducted through a narrow guide passage 60 and so prevented from becoming misplaced in the machine. The intermediate feed roll 5| and the pinion 55 are enclosed beneath a cover plate 36 and this is supplemented by a hinged guard 38 which extends forwardly beside the slashing roll 30.

It will be understood that the anvil roll 29 is a smooth-faced roll of soft steel or brass and that the slashing knives 35 may embed themselves in the face of the anvil roll in making clean slashing cuts 92 in the margin of the counter. The anvil roll is shouldered or relieved to afford clearance beyond the zone of the slashing blades 35 for the thick unskived center portion 90 of the counter blank. The slashing roll 30 is adjustably secured to its sleeve 3| by a set screw as shown in Fig. 4 and when this is loosened the roll 30 may be turned upon the sleeve to bring the slashing blades into any 'desired relation with respect to the counter blank.

The operation of the machine will be clear from the foregoing description, but may be briefly summarized as follows. The flat and unskived counter blanks are placed upon the work table I4 and advanced one by one by the forward movement of a feed slide properly timed to meet the matrix roll where the periphery thereof is shaped to force the blank downwardly for skiving the advancing end of the blank. The blank passes beneath the matrix roll and comes out upon the guide plate I8 with its margin 9| sklved as indicated in Fig. 5. As the blank passes out of the feeding range of the rolls and |3 it is advanced until its straight marginal portion is engaged between the anvil roll 29 and the slashing roll 30. When the counter blank first reaches these rolls the slashing roll 30 merely rests upon it with a feeding pressure so that the forward movement of the blank is continued without any slashing taking place. When, however, the blank has been advanced to the proper point to receive the first slashing cut, as determined by the cam 43 and the setting of the slashing roll, the cam arm 45 is rocked and the shaft 32 forced Ydownwardly imparting sufllcient pres- Vsure to the slashing blades 3| to force them through the margin of the counter and form therein the spaced slashing cuts 92 as shown in Fig. 5. The slashing operation continues throughout a Zone determined by the length of the cam 43, whereupon the cam lever 45 is released and the counter blank fed out from beneath the slashing roll without having any further slashing cuts made in it.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is,

1. A counter skiving and slashing machine comprising matrix roll skiving mechanism, a roll having slashing blades mounted thereon and a cooperating anvil roll, a common actuating means for driving the matrix roll and the slashing roll, and mechanism for interrupting the effective operation of the slashing roll independently of the skiving mechanism thereby limiting the slashing operation to a portion only of the sklved area of the counter.

'2. A machine for slashing counters, comprising a flat faced anvil roll, a cooperating roll having a series of straight slashing blades set therein, operating means for the rolls, and automatic mechanism for throwing them into slashing relation for a predetermined interval during the passage of a counter between them.

3. A machine for slashing counters, comprising a flat faced anvil roll, a slashing roll having a series of straight slashing blades set therein, means for driving said rolls to feed a counter between them, and automatic mechanism for forcing said rolls into slashing relation after a counter blank has been advanced for a portion of its length between them.

4. A machine for slashing counters, including in its structure a pair of shafts arranged in parallel relation, elongated sleeves rotatably mounted on both shafts and geared together, a flat faced anvil roll mounted on one of said sleeves, a slashing roll mounted on the other sleeve and having a series of straight slashing blades set therein, and automatic cam controlled means for positioning one of said shafts to bring said rolls into operating position for a predetermined time interval.

5. A machine for slashing fiat skived counter blanks, including in its structure a roll having an aligned series of radial slashing knives set in its periphery, and a flat faced anvil roll cooperating therewith, one of said rolls being relieved beyond the ends oi the slashing knives to accommodate an unskived portion of a counter blank passing between the rolls.

6. A machine for slashing counter blanks, including its structure a driven member having thereon a rotatably adjustable roll provided with a series of spaced slashing blades, means for holding the roll in diierent positions of rotary adjustment, and adjustable means for supporting said driven member in slashing position during a predetermined interval.

7. A machine for slashing counter blanks, including in its structure a positively driven sleeve having thereon an angularly adjustable slashing roll provided with a series of spaced slashing blades, an anvil roll, and cam controlled mechanism for holding the sleeve and slashing roll in slashing relation to the anvil roll during a predetermined interval.

f CHARLES W. BAILEY. 

